We have discussed the main features of simplified models with a baryonic Majorana dark matter. This type of dark matter candidate
has been predicted in models where the baryon number is defined as a local symmetry. The simplest models based on \(\,{\rm U}(1)_B\)  with a Majorana dark matter have been pointed out in Refs. [1]}, [2]}. In Tables REF  and  REF , we show the extra fermionic representations in these theories.
